An improved phased array ultrasonic probe using 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 single crystal

被引:54
作者
Saitoh, S [1 ]
Takeuchi, T
Kobayashi, T
Harada, K
Shimanuki, S
Yamashita, Y
机构
[1] Toshiba Corp, R&D Ctr, Mat & Devices Res Labs, Kawasaki, Kanagawa 2108582, Japan
[2] Toshiba Corp, Nasu Works, Otawara 3248850, Japan
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1999年 / 38卷 / 5B期
关键词
3.5 MHz phased array ultrasonic probe; PZNT 91/9 single crystal; flux method; solder paste; sensitivity; bandwidth; echocardiography;
D O I
10.1143/JJAP.38.3380
中图分类号
O59 [应用物理学];
学科分类号
摘要
A 96-channel phased array probe for echocardiography using a single-plate, 0.91Pb(Zn1/3Nb2/3)O-3-0.09PbTiO(3) (PZNT 91/9) single-crystal transducer with dimensions of 14 x 20 mm has been fabricated to realize greater sensitivity and broader bandwidth properties. The center frequency of the probe, 3.5 MHz, was selected to cover the bandwidths of two conventional lead zirconate titanate (PZT) ceramic probes with center frequencies of 2.5 and 3.75 MHz. A solder paste was used to connect a flexible printed circuit to the PZNT 91/9 transducer. The echo amplitude of the PZNT 91/9 probe is about 6 JB higher than that of the two PZT probes, and the fractional bandwidths are 30 and 75 percentage points wider, respectively. The B-mode image quality of the PZNT 91/9 probe is comparable to that of the two PZT probes, and the Doppler sensitivity of the PZNT 91/9 probe is almost equal to that of the 2.5 MHz PZT probe, which means that the PZNT 91/9 probe matches both the penetration of the 2.5 MHz PZT probe and the resolution of 3.75 MHz PZT probe.
引用
收藏
页码:3380 / 3384
页数:5
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